gistfile1.txt

C:\ironruby\bin>ir
IronRuby 1.0.0.0 on .NET 2.0.50727.1433
Copyright (c) Microsoft Corporation. All rights reserved.

Note that local variables do not work today in the console.
As a workaround, use globals instead (eg $x = 42 instead of x = 42).

>>> ENV['GEM_PATH'] = 'C:\\Programmi\\Ruby\\lib\\ruby\\gems\\1.8\\'
=> "C:\\Programmi\\Ruby\\lib\\ruby\\gems\\1.8\\"
>>> require 'rubygems'
=> true
>>> require 'ruby_parser'
=> true
>>> @processor = RubyParser.new
=> #<RubyParser:0x00008f6 @lexer=#<RubyLexer:0x00008f2 @cond=StackState(cond, [false]), 
@cmdarg=StackState(cmdarg, [false]), @nest=0, @comments=[], @command_start=true, @lex_strterm=nil, 
@token=nil, @yacc_value=nil, @src=nil, @lex_state=nil, @parser=...>, @env=#<Environment:0x00008f8 
@dyn=[false], @env=[{}], @use=[{}]>, @comments=[], @in_def=false, @in_single=0>
>>> @processor.parse('a = 42')
=> s(:lasgn, :a, s(:lit, 42))
>>>